1 definition by The Reverend Dr. Syn

proof

The term comes from the practice of adding gun powder to an alcoholic liquid and putting a match to it. If the powder ignited then the drink was "Proven". Now is used to show the alcohol content of a beverage. It is calculated by multiplying the % of alcohol in a drink by 2. Ergo, the max proof of an alcoholic drink is 200.

Despite the beers lower proof than the Everclear, if you beerbong 13, you still pass out.

by The Reverend Dr. Syn June 2, 2005